Subtract 96/45 from 21/84, Solve 21/84

Subtract 96/45 from 21/84

1^st number: 21/84, 2^nd number: 2 6/45

21/84 - 96/45 is -113/60.

Find the least common denominator or LCM of the two denominators:
LCM of 84 and 45 is 1260

Next, find the equivalent fraction of both fractional numbers with denominator 1260
For the 1st fraction, since 84 × 15 = 1260,
21/84 = 21 × 15/84 × 15 = 315/1260
Likewise, for the 2nd fraction, since 45 × 28 = 1260,
96/45 = 96 × 28/45 × 28 = 2688/1260
Subtract the two like fractions:
315/1260 - 2688/1260 = 315 - 2688/1260 = -2373/1260
After reducing the fraction, the answer is -113/60

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